I see more disadvantages then advantages. Harder to refuel, exhaust fumes stink, lose power, not any cheaper to operate, large heavy fuel tank, disadvantages. Engine burns cleaner is the only advantage I can see. Got to be a reason you are thinking of doing so other then that? Maybe it looks neat?
1. Propane burns cleaner.
2. Propane is a domestic fuel.
3. Propane is up to 60% less expensive than gasoline.
5. Propane has 21% MORE power per pound than gasoline.
6. Propane is a minimum 107 octane.
7. Oil changes can be extended up to 3 times.
8. Propane contains no ethanol.
9. Propane doesn't go "bad" on the shelf.
10. Propane can't be stolen.
11. Legislation (see urls above) is coming to limit the use of gasoline for commercial mowing.
12. Many customers appreciate the efforts to reduce your carbon footprint.
13. Many municipal customers will accept the bid for a "Clean/Green" supplier over polluters.
14. Almost all HOAs will do business with a "Clean/Green" supplier because they are less polluting and quieter.
15. Fewer complaints from employees about emissions.
16. Much easier starting with propane.
17. No annual carb rebuilds with propane.
18. The conversion equipment can be transferred to a new unit.
19. Mowers last up to three times longer with propane.
20. Used units are worth more at resale because the engine has substantially less wear.
I'll stop at Twenty. There are many more not the least of which is "just wanting to do the right thing."
I'm curious, how many mowers did you run on propane? I'd really like to hear of your experience with them.
Regards!